Malicious PDF — malware analysis report

Static analysis result for SHA-256 095dce9a054bc0d0…

MALICIOUS

PDF

40.4 KB Created: 2020-08-03 01:59:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 280c3d3c2bb1a258c04246ddf2a73fd7 SHA-1: 3b7103401f174857b388f0e5d5d42c650d851bbc SHA-256: 095dce9a054bc0d09f39eaab79d14221eed62899e5fc4eba337b21244f51e53f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a 'Trane touchscreen thermostat manual' and a URL that appears to be part of a link farm designed to manipulate search engine results. The presence of many external links, including those to benign Shopify URLs and other potentially malicious domains, suggests an attempt to drive traffic or distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=trane+touchscreen+thermostat+manual
    • http://files.seashore-house.com/uploads/1/3/0/9/130969754/0de76.pdf
    • http://files.dgordonassociates.com/uploads/1/3/0/8/130874104/fomufunawamiz.pdf
    • http://files.olsonimmigration.com/uploads/1/3/1/8/131871781/todalunixupo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/9058/3458/files/dujumapiforuvabipiv.pdf
    • https://cdn.shopify.com/s/files/1/0434/5823/2473/files/39936002836.pdf
    • https://cdn.shopify.com/s/files/1/0431/6823/5682/files/96590433360.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/doxufuvezemog.pdf
    • https://cdn.shopify.com/s/files/1/0430/4227/5485/files/perogim.pdf
    • https://cdn.shopify.com/s/files/1/0437/9354/7424/files/jubij.pdf
    • https://cdn.shopify.com/s/files/1/0432/4130/8319/files/jeluxetoxebelagixi.pdf
    • https://cdn.shopify.com/s/files/1/0427/8275/2935/files/zidovitapokijiforemoduw.pdf
    • https://cdn.shopify.com/s/files/1/0434/3654/0069/files/digipuvomupetepok.pdf
    • https://cdn.shopify.com/s/files/1/0428/8774/1607/files/rekedesug.pdf
    • https://cdn.shopify.com/s/files/1/0429/1490/6275/files/23672012182.pdf
    • https://cdn.shopify.com/s/files/1/0440/2623/2997/files/jafezutusurokedupabula.pdf
    • https://cdn.shopify.com/s/files/1/0431/7963/8942/files/vigufixenijobof.pdf
    • https://cdn.shopify.com/s/files/1/0436/3180/4574/files/operations_management_russell_and_taylor.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000628d.bin
6bc4731338b0993aef5c96bd73c0a8b2115e7fb6bb27052bebe07ea7eaf0d074		 pdf-font-stream PDF embedded font (sfnt) at offset 0x628D 4988 bytes
font_01_sfnt_off00007352.bin
a17f52c7bc1f395250f1dd9c7fede35e851a57f4762ea532f40d6c71e8c8f22d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7352 9752 bytes

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